We have seen the stock cast spring retainers crack and break under hard riding or racing conditions. Not only can you make them considerably stronger with this 6061 billet aluminum version but they also look amazing. Add some bling factors to your front shocks while gaining strength. Simply swap out the retainers and go! Black anodized and machined to a beautiful finish. Replaces Polaris part numbers 5633031 and 5633421. This is for ONE retainer for the FRONT shock.